These red metal plastisol lined caps can be purchased by the bag or in bulk quantities. Proper heating methods will heat the plastisol liner causing it to solidify creating a tamper evident seal between itself and the container. When the metal caps are first opened, a pop noise indicates the seal has been broken.Add to Cart

These red metal plastisol lined caps can be purchased by the bag or in bulk quantities. Proper heating methods will heat the plastisol liner causing it to solidify creating a tamper evident seal between itself and the container. When the metal caps are first opened, a pop noise indicates the seal has been broken.